1.02838

L-Cysteine

for biochemistry

• Sinonimo/i: L-Cysteine, α-Amino-ß-mercapto propionic acid, αlpha-Amino-ß-mercapto propionic acid, Cys, αlpha-Amino-beta-mercapto propionic acid
• Formula empirica (notazione di Hill): C₃H₇NO₂S
• Numero CAS: 52-90-4
• Peso molecolare: 121.16
• Numero MDL: MFCD00064306
• Codice UNSPSC: 12352209
• Numero indice EU: 200-158-2
• NACRES: NA.21

Proprietà

• Livello qualitativo: 100
• Stato: solid
• Temp. autoaccensione: 420 °C
• Potenza: 1890 mg/kg LD₅₀, oral (Rat)
• pH: 4.5-5.5 (20 °C, 100 g/L in H₂O)
• Punto di fusione: 220-228 °C
• Solubilità: 280 g/L
• Densità bulk: 300 kg/m³
• Temperatura di conservazione: 2-30°C
• Stringa SMILE: SCC([N+H3])C(=O)[O-]
• InChI: 1S/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6); XUJNEKJLAYXESH-UHFFFAOYSA-N

Descrizione

Applicazioni

• Exploring the molecular mechanisms of Lrp/AsnC-type transcription regulator DecR, an L-cysteine-responsive feast/famine regulatory protein.: This study delves into the role of DecR, an L-cysteine-responsive regulatory protein, in modulating bacterial response to nutrient availability, offering insights into microbial metabolism and potential targets for antibacterial strategies (Zhou et al., 2024).

Risultati analitici

Assay (perchloric acid titration, calculated on dried substance): ≥ 99.0
Identity (IR-spectrum): passes test
Appearance: colorless to white, needle-shaped crystals
Appearance of solution (100 g/l, hydrochloric acid  2 mol/l): clear and colorless
Spec. rotation (α 20/D, 80 g/l, hydrochloric acid 1 mol/l, calc.on dried substance): +8.3 to +9.5
pH (25 g/l; CO₂-free water): 4.5 - 5.5
Chloride (Cl): ≤ 0.04 %
Sulfate (SO₄): ≤ 0.03 %
Heavy metals (as Pb): ≤ 0.001 %
As (Arsenic): ≤ 0.0001 %
Ca (Calcium): ≤ 0.001 %
Co (Cobalt): ≤ 0.0005 %
Fe (Iron): ≤ 0.0010 %
K (Potassium): ≤ 0.0005 %
Mg (Magnesium): ≤ 0.0005 %
Na (Sodium): ≤ 0.01 %
NH₄ (Ammonium): ≤ 0.02 %
Zn (Zinc): ≤ 0.0005 %
Foreign amino acids: ≤ 0.5 %
Other ninhydrine positive substances: ≤ 0.1 %
Loss on drying (105 °C; 3 h): ≤ 0.5 %

Informazioni sulla sicurezza

• Codice della classe di stoccaggio: 11 - Combustible Solids
• Classe di pericolosità dell'acqua (WGK): WGK 1
• Punto d’infiammabilità (°F): Not applicable
• Punto d’infiammabilità (°C): Not applicable